44 results about "Broadcast television systems" patented technology

A system and method for displaying still video images related to video content in an interactive broadcast television system. The system and method of the present invention may also be used for simulating an Internet home page on an interactive television system. The present invention thus supports hyperlinked web-like navigational capabilities in an interactive television system. According to the method of the present invention, the video delivery system provides or broadcasts one or more audio/video channels each comprising video content and also provides or broadcasts at least one still image channel comprising a plurality of still video images, preferably MPEG-2 compressed still images. The user or viewer can select options displayed on the television screen to view desired information. When the set top box receives user input selecting an option to view one of the linked still images, the set top box captures the requested image from the still image broadcast channel, stores the image in memory, and displays the captured still video image corresponding to the selection. The still image being displayed may have associated interactive program content for displaying further selections, wherein these selections may be for viewing other images or content, for ordering information, or purchasing products. The user can thus selectively navigate between the video content and stills in a web-like hyperlinked fashion. In one embodiment, when a user is navigating through still images, the television program or video content which was being viewed is displayed in a small window overlaid on the still image being displayed. Also, when the set top box captures a requested image from the still image broadcast channel, the set top box preferably also pre-caches or pre-loads other related still images based on the probabilty that these related images will be subsequently requested by the user. The invention also includes an embodiment which provides user requested still images "on demand" on a dedicated "search" channel.

A system and method for displaying still video images related to video content in an interactive broadcast television system. The system and method of the present invention may also be used for simulating an Internet home page on an interactive television system. The present invention thus supports hyperlinked web-like navigational capabilities in an interactive television system. According to the method of the present invention, the video delivery system provides or broadcasts one or more audio/video channels each comprising video content and also provides or broadcasts at least one still image channel comprising a plurality of still video images, preferably MPEG-2 compressed still images. The user or viewer can select options displayed on the television screen to view desired information. When the set top box receives user input selecting an option to view one of the linked still images, the set top box captures the requested image from the still image broadcast channel, stores the image in memory, and displays the captured still video image corresponding to the selection. The user can also request to view an image which is not currently being transmitted by the video delivery system. In this instance, the system provides user requested still images “on demand” on a dedicated “search” channel. The user can thus selectively navigate between the video content and stills in a web-like hyperlinked fashion.

Certain embodiments of the invention may be found in a method and system for a vestigial side band (VSB), quadrature amplitude modulation (QAM), NTSC, out-of-band (OOB) receiver that is integrated in a single chip. The single chip integrated digital television (DTV) receiver provides plug and play DTV receiver capability for handling both North American digital cable television and digital terrestrial broadcast television compatible systems. The integrated DTV receiver may receive all standard-definition and high-definition digital formats (SDTV/HDTV) and an on-chip NTSC demodulator handles NTSC video. An output of the NTSC demodulator may be directed to an external broadcast television system committee (BTSC) or Zweiton M decoder, or it may be sent to an on-chip audio BTSC compliant decoder. The single chip integrated DTV receiver may also comprise an integrated out-of-band QPSK receiver, which may be adapted to, for example, handle a CableCard compliant with the CableCard Specification.

The invention provides a method and a system for reconfiguration of cognitive radio system resources. The method includes: obtaining reconfiguration commands by respective reconfiguration modules of different radio communication systems according to received frequency spectrum adjustment instructions, network condition monitoring or negotiations of the reconfiguration modules of the different systems; and transmitting the reconfiguration commands to a base station, and performing the reconfiguration commands by the base station so that resource reconfiguration is realized. By the method and the system for reconfiguration of the cognitive radio system resources, the radio resources are reasonably reconfigured by the aid of the respective reconfiguration modules of the different radio communication systems according to use conditions of frequency spectrum resources in the systems, utilization of the frequency spectrum resources among RATs (radio access technologies) and a main system can be coordinated, and resource utilization rate of each radio communication system and the frequency spectrum utilization rate of the main system like a broadcast television system are increased, so that network load conditions are more balanced.

The present invention concerns a method for reducing the channel change time in a broadcast television system by encoding a termed companion service in addition to the main service. The companion service is sent along with the original service and helps the receiver to retrieve and display the new service more rapidly during the channel change process. With this solution the service is encoded and streamed in its original format, plus encoded and streamed in a low resolution format.

The method thereof comprises: 1) the frond-end system sends the boot image data to the set-top box through the transmission network; 2) when powering on, the set-top box receives the boot image data, and sends it to the display device to display after decoding. The boot image data can be a webpage file or video file; the webpage file can include text, image, motion picture and video stream.

The invention provides a broadcasting television system, which includes an input part used for inputting various parameters and commands required for recommendation of personalized programs in the broadcasting television system, a program information storage part used for storing information and data of various broadcasting television programs, an analytical unit used for generating a to-be-sent personalized program list based on all the parameters input by the input part and information read by the program information storage part, about broadcasting television programs, and used for confirming a recommending group as a sending target, and a recommendation information sending part used for sending the personalized program list to the program group. Through the adoption of the structure, different personalized program lists can be recommended to different users of the broadcasting television system.

The invention provides a synchronization method and a synchronization system for a single frequency network digital broadcast television system. The synchronization method comprises the following steps of: 1) in a central station, stamping a time stamp on each transport stream (TS) packet of TS program stream, wherein the time stamp records absolute stamping time; and 2) when each transmitting station receives each TS packet, calculating absolute transmitting time of the TS packet according to the time stamp of the TS packet and preset delay time, and transmitting the TS packet according to the absolute transmitting time by using each transmitting station, wherein the absolute transmitting time is the sum of the absolute stamping time of the TS packet recorded by the time stamp of the TS packet and the preset delay time. In addition, the invention provides a corresponding synchronization system. The method and the system can avoid error accumulation, improve synchronization reliability, ensure that the transmitting stations are easy and convenient to debug, and avoid asynchronization caused by packet loss, wrong packets and the like in an exciter, and are particularly suitable for a complex hybrid network and a remote distributed network.

The invention provides a multicarrier communication method and device having no time and frequency protection intervals, and belongs to the technical field of information transmission. Orthogonality, required by a multicarrier system, between sub carriers waves is abandoned; from the point of a sub carrier wave modulation signal extraction, through combinations with a sine and cosine frequency conversion technology and a basic characteristic of a Hilbert conversion, sub carrier wave modulation signals are extracted from received signals one by one, and separate demodulation is performed on the sub carrier wave modulation signals then, so the common problem that an orthogonal system multicarrier system has the high dependence degree of the orthogonality between the sub carrier waves, multicarrier transmission having no time and frequency protection intervals is achieved, and frequency spectrum efficiency and power efficiency of the multicarrier system are improved. In a multi-path attenuation channel, compared with an OFDM multicarrier technology, the method and device have an obvious performance advantage. The communication method device provided by the invention are suitable for any communication frequency band, and a set of new scheme is provided for design of a 5G mobile communication system, a new-generation broadband satellite broadcast television system and other communication systems.

The method comprises: 1) the frond end system sends the video data and the webpage data relating to the video data to the set-top box through network; 2) the set-top box receives and resolves the webpage data, and gets the relevant parameters from the resolved webpage data; according to the relevant parameters corresponding to the video data, the set-top box decodes the video data; 3) according to the resolved webpage data and decoded video data, the set-top box overlaps them and outputs them to display. By the invention, when displaying a webpage, its relevant video information is also displayed.

The embodiment of the invention discloses a method of accessing a broadcast television system, a terminal and a network side server for enabling the terminal to access the broadcast television system without being bound to a set-top box and relates to the field of communication. According to the method of accessing the broadcast television system, the terminal and the network side server, the network side server performs authentication on the access terminal after receiving an authentication request sent from the terminal; the terminal accesses a wireless hotspot in advance and is connected to the network side server through the access wireless hotspot; the network side server sends authorization information and a customized service list with broadcast television program information to the terminal to instruct the terminal to configure the terminal according to authorization information after passing through authentication and initiates a data access request to the broadcast television system corresponding to programs requested to play according to the customized service list; the customized service list is generated and updated by the network side server.

The invention discloses a method for realizing program selective purchasing by a digital television user and data acquisition through a two-dimensional code. The method comprises the steps of: (1), generating the two-dimensional code, wherein the two-dimensional code includes device information of a set-top box itself, user watching behaviour information and encryption information; (2), displayingthe two-dimensional code: calling the two-dimensional code through a set-top box menu to display on the screen of a television, or, regularly popping out the two-dimensional code to display on the screen of the television by the set-top box; (3), scanning and uploading the two-dimensional code, wherein a user scans the two-dimensional code through a mobile phone app, and transmits the two-dimensional code to a management side through the mobile phone app; and (4), identifying the two-dimensional code: identifying information of the two-dimensional code by the management side, and performing data statistic analysis according to the identified two-dimensional code information, or entering a program selective purchasing process. By means of the method disclosed by the invention, conversion from a unidirectional broadcast television network to a bidirectional interactive network can be realized; and thus, the service capability and level of a broadcast television system are improved.

This invention relates to a country broadcast TV system based on FM optical terminals including a CATV signal input end with FM signals, optical receivers in the country and FM broadcast terminals and TV terminals, in which, the CATV signal input end is connected with the optical receivers by cables, and the receivers are connected with the FM broadcast terminals and TV terminals, a FM optical terminal and a WDM light splitter are also included in the system, and the FM optical terminal includes a FM signal circuit, an electric/ optical signal conversion circuit and an optical signal control circuit, the output of the electric/optical signal conversion circuit and the CATV signal input end are connected with the input of the WDM splitter, the output of which is connected with the optical receivers. A realization method is also disclosed.

The invention relates to a system and a method for realizing digital resource service on a digital television broadcasting system. The system comprises a digital resource content establishing subsystem, a service establishing subsystem and a service management subsystem, wherein the digital resource content establishing subsystem is used for processing, integrating and describing the contents of digital resources; the service establishing subsystem can enable the digital resources which are integrated by the digital resource content establishing subsystem to be capable of being played for previewing according to the showing mode of the digital resources, shows the contents of the digital resources according to the service description, and carries out encapsulation and code stream conversion on the contents of the generated digital resources to enable the contents of the digital resources to be compatible with the current digital television broadcasting network; the service management subsystem is used for managing and compiling digital resource broadcasting; and the contents of the digital resources generated by the service establishing subsystem can be transmitted to user terminals through the digital television broadcasting system. The invention can realize interactive digital resource service by utilizing the digital broadcasting television system, thereby forming a new digital resource service way.

The invention discloses a secondary event broadcasting method of broadcasting television system, which comprises the steps that the secondary event broadcasting schedule is edited by the signal output equipment of the secondary event; the signal output equipment of the secondary event adjusts the secondary event broadcasting schedule according to the changed primary event broadcasting program sheet as the primary event broadcasting program sheet changes; the secondary event signal and the primary event signal are composited to a signal for broadcasting as the television program is broadcast. The invention discloses a secondary event broadcasting system of broadcasting television system. The invention has the advantages of lowering the workload of operators because the changed primary event broadcasting program sheet is passed to the signal output equipment of the secondary event in order to adjust the secondary event broadcasting schedule as the primary event broadcasting program sheet changes, preventing the error that the primary event is not matched with the secondary event partially, and realizing the synchronous jump of the signal output equipment of the secondary event as emergency occurs.

The invention relates to a Beidou multifunctional timing system. The Beidou multifunctional timing system comprises an antenna module, a satellite receiving module, an NTP module, a time keeping plate module, a B code output module and a motherboard. An output end of the antenna module is connected with the satellite receiving module. The satellite receiving module is connected with the motherboard. The NTP module is connected with the motherboard. The time keeping plate module is connected with the motherboard. The B code output module is connected with the motherboard. The motherboard is connected with each function module. A display control module is connected with the motherboard. A power supply module is connected with the motherboard. According to the invention, high precision time service is realized, multiple NTP output is supported, output of a plurality of kinds of time frequency signals is supported, B code parameters are adjustable, output of messages in RS-232 and RS-485 modes is supported, the Baud rate is configurable, a card-inserting structure is adopted, and the Beidou multifunctional timing system can be widely applied to the fields requiring precise time service, such as a communication system, an electric power system, a digital broadcast television system, a finance system, a meteorology astronomy system, an Internet of Things and special communication.

A digital BTSC (Broadcast Television Systems Committee) encoder (52) featuring integrated digital FM modulation comprises a digital BTSC audio processor (78) and a digital FM modulator (82). The digital BTSC audio processor module (78) is responsive to a left audio input signal (64) and a right audio input signal (66) for digitally encoding the left and right audio input signals into a digital composite audio signal (79). The digital FM modulator (82) is responsive to the digital composite audio signal (79) for FM modulating the digital composite audio signal into a digital FM modulated composite audio signal (83) and outputting the digital FM modulated composite audio signal.

The present invention discloses safe access method and device for digital broadcast television network. The method includes: establishing interactive digital broadcast television system; performing interactive user access network confirmation of the terminal part with the user access protocol of the interactive network while turning on the terminal; performing the user access system confirmation of the terminal part based on the user information; and accessing the terminal passing through the confirmation into digital broadcast television system. The safe access device has front end part including recombiner, scrambler, control word generator and service management control unit; and terminal part including decombiner, descrambler and interactive service processing unit. The present invention also discloses corresponding front end device and back end device. The present invention overcomes the demerit of relying cipher key alone with poor safety and is simple in structure, easy to realize and easy in system control.

A method of digital BTSC (Broadcast Television Systems Committee) encoding featuring integrated digital FM modulation comprises digitally encoding and FM modulating. A left audio input signal (64) and a right audio input signal (66) are digitally encoded into a digital composite audio signal (79) via a digital BTSC audio processor (78). Responsive to the digital composite audio signal (79), a digital FM modulator (82) digitally FM modulates the digital composite audio signal (79) into a digital FM modulated composite audio signal (83).

The invention relates to a broadband coaxial lightning arrester with a copper-aluminum structure, which is used for protecting coaxial devices in broadcasting television systems and microwave communication and mobile communication base stations. The broadband coaxial lightning arrester with the copper-aluminum structure comprises an outer conductor, an inner conductor, an insulator, a short-circuiting device shell and a short-circuiting device short-circuiting lever, wherein an outer conductor main body of the middle section of the outer conductor is made from an aluminum alloy material; one end of the outer conductor main body is provided with a connecting section of which the aperture is larger than that of the middle part of the outer conductor; the back section of a section of copper material insertion piece is arranged in the connecting section of the outer conductor main body in an interference fit mode; the front section of the insertion piece serves as a joint part of the outerconductor of; and the rear end of the outer conductor main body is in interference fit connection with an inner hole of a copper material rear insertion piece. The broadband coaxial lightning arrester can be ensured to have good electric conductivity, contact elasticity and contact strength when inserted with other coaxial devices, and simultaneously can greatly reduce the usage amount of the copper material and reduce the material cost.